Limitation Period for Written Contract Debt Claims

Debt claims arising from written commercial contracts in England and Wales are governed by strict statutory time limits. These limits determine how long a creditor has to bring court proceedings to recover unpaid sums under a contract. If the time limit expires, the debtor can rely on limitation as a complete defence, preventing enforcement through the courts.

The principal legislation is the Limitation Act 1980, which sets different limitation periods depending on the type of obligation and legal form of the contract.

What Counts as a Written Contract Debt Claim

A written contract debt claim typically involves:

• Unpaid invoices for goods supplied or services provided
• Contractual sums due under a written agreement
• Instalments or staged payments not made under contract terms
• Commercial credit arrangements documented in writing

Importantly, the fact that a contract is written does not automatically change the limitation period. In most cases, the key question is whether the contract is a simple contract or executed as a deed.

Standard Limitation Period: Six Years

Simple contracts (including most written agreements)

Under section 5 of the Limitation Act 1980, the limitation period for debt claims based on a simple contract is:

• Six years from the date the cause of action accrues

This applies even where the agreement is:

• Fully written and signed
• Electronically executed
• Formally structured in commercial terms

The classification depends on whether it is a deed, not whether it is written.

When Time Starts Running in Debt Claims

General rule: due date of payment

For written contract debt claims, time normally starts when the payment becomes due, for example:

• Invoice due date
• Contractual payment milestone date
• Date of breach of payment obligation

If payment is not made on the due date, the creditor's right to sue arises immediately, and the limitation clock begins.

Installments and ongoing payment obligations

Where a contract provides for instalments:

• Each missed instalment may create a separate cause of action
• A new six-year period applies to each missed payment

This is common in commercial supply agreements and finance arrangements.

Written Loan Agreements and Special Rules

Certain written loan contracts fall under additional provisions in the Limitation Act 1980.

Demand loans

Where a loan:

• Has no fixed repayment date, and
• Is repayable on demand,

special rules may apply. In some cases:

• Time does not start until a formal written demand for repayment is made

This can significantly affect when limitation begins.

Deeds and Longer Limitation Periods

If a written contract is executed as a deed:

• The limitation period is twelve years (not six)

This applies to:

• Certain commercial guarantees
• Property-related contractual obligations
• High-value financial instruments

The legal distinction depends on execution formalities, not document title.

Acknowledgment and Part Payment: Resetting Time

A key feature of debt limitation law is that the time limit can restart.

Written acknowledgment

If the debtor:

• Admits liability in writing, or
• Confirms the existence of the debt,

the limitation period resets from the date of acknowledgment.

Part payment

If the debtor makes a payment towards the debt:

• The six-year period restarts from the date of payment

These rules are set out in sections 29–30 of the Limitation Act 1980.

Effect of Expiry of the Limitation Period

If more than six years pass (or twelve for deeds) without:

• Court proceedings being issued, and
• No valid acknowledgment or payment,

then:

• The claim becomes statute-barred
• The debtor can raise limitation as a complete defence
• Courts will generally refuse enforcement

However:

• The underlying debt may still exist morally or commercially
• It is the legal remedy that is extinguished, not necessarily the obligation itself

Interaction with Court Proceedings

When a claim is considered “brought”

For limitation purposes:

• A claim is generally “brought” when the claim form is issued by the court, not when it is served

This is critical where limitation deadlines are close.

Enforcement of judgments

Once judgment is obtained:

• A separate limitation period applies to enforcement (typically six years for enforcing a judgment)

Common Commercial Scenarios

Unpaid invoices

Typical limitation position:

• Six years from invoice due date
• Separate limitation period per invoice in ongoing supply relationships

Breach of payment terms in contracts

Where a written contract specifies payment stages:

• Limitation runs from each missed stage payment

Long-term service contracts

If services are ongoing:

• Each failure to pay generates a new limitation clock

Key Risks in Written Contract Debt Claims

Common issues leading to lost claims include:

• Miscalculating the invoice due date
• Assuming negotiations stop limitation (they do not unless formally agreed)
• Failing to track partial payments or acknowledgments
• Confusing written contracts with deeds
• Delay in issuing proceedings close to limitation expiry

Practical Legal Considerations

In commercial debt recovery:

• Early identification of the cause of action date is critical
• Written evidence of acknowledgment should be preserved
• Payment history must be reviewed for limitation resets
• Contract classification (simple contract vs deed) must be confirmed before proceedings

Key Takeaways

The limitation period for written contract debt claims in England and Wales is generally six years from the date the debt becomes due under the Limitation Act 1980. This applies to most written commercial agreements, which are treated as simple contracts unless executed as deeds, in which case a twelve-year period applies.

Time typically starts from the payment due date, and each missed payment may generate a separate limitation period. The limitation clock can be reset by written acknowledgment of the debt or part payment. Once the limitation period expires, the claim becomes statute-barred and unenforceable through the courts.

Careful calculation of the start date, contract classification, and any potential reset events is essential in commercial debt recovery.